900 Watts RMS per channel into 4 Ohms, 550 Watts RMS per channel into 8 Ohms.1800 Watts RMS at 8 Ohms bridged.LED indicators for input signal, DDT and power.2 built-in 150 Hz crossovers.40 Hz low cut filter.Volume control per channel.Dual-speed fan with Turbo V-Cooling technology.DDT speaker protection.2U space rack.Dimensions (HxWxD): 3.5'' (90mm) x 19'' (483mm) x 15.5'' (394mm)Weight: 49lbs (22.25kg)